Deployment of a compact, transportable, fully automated Josephson voltage standard

Author

Kupferman, Stuart L. ; Hamilton, Clark A.

Author_Institution

Sandia Nat. Labs., Albuquerque, NM, USA

Volume

48

Issue

2

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

249

Lastpage

252

Abstract

A compact, transportable, Josephson voltage standard, first reported at CPEM96, has now been field tested and has had ten months of use as a primary standard by the National Aeronautics and Space Administration (NASA) laboratories. We discuss here its uncertainty assessment, the results of inter-comparisons with conventional Josephson standards, operator training, and the experience of users. A second similar standard with an improved microwave system has been fabricated at the National Institute of Standards and Technology (NIST) and delivered to Sandia National Laboratories (SNL) for use by Department of Energy (DOE) standards laboratories

Keywords

Josephson effect; measurement standards; measurement uncertainty; voltage measurement; DOE standards laboratories; NASA; NIST; Sandia National Laboratories; fully automated Josephson voltage standard; inter-comparisons; operator training; primary standard; uncertainty assessment; Automatic control; Control systems; Helium; Laboratories; Microwave oscillators; NASA; NIST; US Department of Energy; Uncertainty; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.769575

Filename

769575